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View Diary: What Exactly is in Dilbit? It is a Secret. (242 comments)

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    mightymouse
    then when the mixture gets to the refinery, they take the NGLs out and re-use them for diluting
    While the crude fractions that are natural gas liquids get separate out by boiling point at petroleum refineries, all such hydrocarbons are sold for conventional refinery consumers.

    Petroleum refineries receiving tar sands crude diluted with natural gas liquids do not send the hydrocarbons separated from petroleum liquids back to the tar sands for any kind of re-use as a diluent.

    •  you may be right - not sure (2+ / 0-)
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      Agathena, elwior

      I am not an expert. Should have said natural gas "condensate," rather than "liquids." Though maybe it's the same stuff

      But check out this article:

      It’s a Kinder Magic - The Eagle Ford Canada Diluent Trail

      The “diluent trade” is a growing business for US Gulf Coast producers and refiners. The business consists of sourcing condensates in the Gulf Coast region and shipping them to Western Canada by pipeline. In Canada the condensate is mixed with heavy tar sands “bitumen” to make a “dilbit” crude light enough to flow back to the US (or Eastern Canada) in a pipeline (see It’s a Bitumen Oil – Does it go Too Far?). Canadian demand for condensate as diluent is expected to grow rapidly in the coming years. The chart below is based on Canadian Energy Research Institute (CERI) estimates published in 2011 for condensate/diluent demand in Canada. Total Canadian demand (blue line) is forecast to expand from 300 Mb/d in 2012 to 670 Mb/d by 2020 . At the same time, Canadian condensate production (red shaded area) is only about 150 Mb/d leaving a growing requirement for imports (green line).

      An ambulance can only go so fast - Neil Young

      by mightymouse on Mon Apr 08, 2013 at 01:29:59 PM PDT

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